Troubleshooting - DeDietrich CBB Series User Manual

7. Troubleshooting

7 Troubleshooting
Checks to make before calling your fitter:
Faults
The boiler stops soon after ignition.
Flue gases are escaping from the
loading door.
The radiators are cold.
There is no domestic hot water.
For all other problems: Contact the fitter.
Before informing the fitter of a fault, make a note of the following
information:
- Product type
- Year of manufacture
- Serial number
This information can be found on the rating plate stuck to the side
panel of the boiler.
16
Probable causes
The fire has not properly taken (the set
temperature has not been reached).
The door seals are not airtight.
The heating outlet and return valves are closed. Open valves.
Boiler fitted with a control unit:
The control unit is not correctly set.
The boiler thermostat and/or the remote control
are not correctly set.
The water level and/or pressure are too low.
The radiator valves are closed.
The heating circulator pump and/or the storage
tank load pump do not work.
The 3-way valve does not open automatically.
The domestic hot water calorifier load pump
does not work.
There is air in the primary circuit (exchanger)
on the domestic hot water calorifer.
Relight the fire.
See chapter: "Ignition"
Get the fitter to adjust the doors.
Have the fitter replace the seals if necessary.
Check the settings
See: Control unit instructions
Increase the setting.
Fill the installation and bleed the radiators.
Open valves.
Turn the unlocking screw located at the centre of the pump with a
screwdriver.
Open the valve.
Contact the fitter.
Turn the unlocking screw located at the centre of the pump with a
screwdriver.
Activate the automatic bleed on the domestic hot water calorifier.
CBB
Fault finding
15/09/2008 - 300008541-001-E